Limbus is down. The chip are literally unobtainable. They didn't add them to the curio like the other items they added. So unless they plan on bringing these items back for another purpose down the line, it's not possible to complete this ROE. The quote I posted in my original message suggests these items have simply been removed from the game/circulation and you can't get them anymore. But that would mean the RoE categories are unable to be completed. A huge oversight if so.